<?php

declare(strict_types=1);

/*
 * This file is part of PHP CS Fixer.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *     Dariusz Rumiński <dariusz.ruminski@gmail.com>
 *
 * This source file is subject to the MIT license that is bundled
 * with this source code in the file LICENSE.
 */

namespace PhpCsFixer\Fixer\Operator;

use PhpCsFixer\AbstractFixer;
use PhpCsFixer\Fixer\ConfigurableFixerInterface;
use PhpCsFixer\Fixer\ConfigurableFixerTrait;
use PhpCsFixer\FixerConfiguration\FixerConfigurationResolver;
use PhpCsFixer\FixerConfiguration\FixerConfigurationResolverInterface;
use PhpCsFixer\FixerConfiguration\FixerOptionBuilder;
use PhpCsFixer\FixerDefinition\CodeSample;
use PhpCsFixer\FixerDefinition\FixerDefinition;
use PhpCsFixer\FixerDefinition\FixerDefinitionInterface;
use PhpCsFixer\Future;
use PhpCsFixer\Tokenizer\CT;
use PhpCsFixer\Tokenizer\FCT;
use PhpCsFixer\Tokenizer\Token;
use PhpCsFixer\Tokenizer\Tokens;

/**
 * @phpstan-type _AutogeneratedInputConfiguration array{
 *  anonymous_class?: bool,
 *  named_class?: bool,
 * }
 * @phpstan-type _AutogeneratedComputedConfiguration array{
 *  anonymous_class: bool,
 *  named_class: bool,
 * }
 *
 * @implements ConfigurableFixerInterface<_AutogeneratedInputConfiguration, _AutogeneratedComputedConfiguration>
 *
 * @author Dariusz Rumiński <dariusz.ruminski@gmail.com>
 *
 * @no-named-arguments Parameter names are not covered by the backward compatibility promise.
 */
final class NewWithParenthesesFixer extends AbstractFixer implements ConfigurableFixerInterface
{
    /** @use ConfigurableFixerTrait<_AutogeneratedInputConfiguration, _AutogeneratedComputedConfiguration> */
    use ConfigurableFixerTrait;
    private const NEXT_TOKEN_KINDS = [
        '?',
        ';',
        ',',
        '(',
        ')',
        '[',
        ']',
        ':',
        '<',
        '>',
        '+',
        '-',
        '*',
        '/',
        '%',
        '&',
        '^',
        '|',
        [\T_CLASS],
        [\T_IS_SMALLER_OR_EQUAL],
        [\T_IS_GREATER_OR_EQUAL],
        [\T_IS_EQUAL],
        [\T_IS_NOT_EQUAL],
        [\T_IS_IDENTICAL],
        [\T_IS_NOT_IDENTICAL],
        [\T_CLOSE_TAG],
        [\T_LOGICAL_AND],
        [\T_LOGICAL_OR],
        [\T_LOGICAL_XOR],
        [\T_BOOLEAN_AND],
        [\T_BOOLEAN_OR],
        [\T_SL],
        [\T_SR],
        [\T_INSTANCEOF],
        [\T_AS],
        [\T_DOUBLE_ARROW],
        [\T_POW],
        [\T_SPACESHIP],
        [CT::T_ARRAY_SQUARE_BRACE_OPEN],
        [CT::T_ARRAY_SQUARE_BRACE_CLOSE],
        [CT::T_BRACE_CLASS_INSTANTIATION_OPEN],
        [CT::T_BRACE_CLASS_INSTANTIATION_CLOSE],
        [FCT::T_AMPERSAND_FOLLOWED_BY_VAR_OR_VARARG],
        [FCT::T_AMPERSAND_NOT_FOLLOWED_BY_VAR_OR_VARARG],
    ];

    public function getDefinition(): FixerDefinitionInterface
    {
        return new FixerDefinition(
            'All instances created with `new` keyword must (not) be followed by parentheses.',
            [
                new CodeSample("<?php\n\n\$x = new X;\n\$y = new class {};\n"),
                new CodeSample(
                    "<?php\n\n\$y = new class() {};\n",
                    ['anonymous_class' => false]
                ),
                new CodeSample(
                    "<?php\n\n\$x = new X();\n",
                    ['named_class' => false]
                ),
            ]
        );
    }

    /**
     * {@inheritdoc}
     *
     * Must run before ClassDefinitionFixer, NewExpressionParenthesesFixer.
     */
    public function getPriority(): int
    {
        return 38;
    }

    public function isCandidate(Tokens $tokens): bool
    {
        return $tokens->isTokenKindFound(\T_NEW);
    }

    /**
     * @protected
     *
     * @TODO 4.0 move visibility from annotation to code when `NewWithBracesFixer` is removed
     */
    public function createConfigurationDefinition(): FixerConfigurationResolverInterface
    {
        return new FixerConfigurationResolver([
            (new FixerOptionBuilder('named_class', 'Whether named classes should be followed by parentheses.'))
                ->setAllowedTypes(['bool'])
                ->setDefault(true)
                ->getOption(),
            (new FixerOptionBuilder('anonymous_class', 'Whether anonymous classes should be followed by parentheses.'))
                ->setAllowedTypes(['bool'])
                ->setDefault(Future::getV4OrV3(false, true))
                ->getOption(),
        ]);
    }

    protected function applyFix(\SplFileInfo $file, Tokens $tokens): void
    {
        for ($index = $tokens->count() - 3; $index > 0; --$index) {
            if (!$tokens[$index]->isGivenKind(\T_NEW)) {
                continue;
            }

            $nextIndex = $tokens->getNextTokenOfKind($index, self::NEXT_TOKEN_KINDS);

            // new anonymous class definition
            if ($tokens[$nextIndex]->isGivenKind(\T_CLASS)) {
                $nextIndex = $tokens->getNextMeaningfulToken($nextIndex);

                if (true === $this->configuration['anonymous_class']) {
                    $this->ensureParenthesesAt($tokens, $nextIndex);
                } else {
                    $this->ensureNoParenthesesAt($tokens, $nextIndex);
                }

                continue;
            }

            // entrance into array index syntax - need to look for exit

            while ($tokens[$nextIndex]->equals('[') || $tokens[$nextIndex]->isGivenKind(CT::T_ARRAY_INDEX_CURLY_BRACE_OPEN)) {
                $nextIndex = $tokens->findBlockEnd(Tokens::detectBlockType($tokens[$nextIndex])['type'], $nextIndex);
                $nextIndex = $tokens->getNextMeaningfulToken($nextIndex);
            }

            if (true === $this->configuration['named_class']) {
                $this->ensureParenthesesAt($tokens, $nextIndex);
            } else {
                $this->ensureNoParenthesesAt($tokens, $nextIndex);
            }
        }
    }

    private function ensureParenthesesAt(Tokens $tokens, int $index): void
    {
        $token = $tokens[$index];

        if (!$token->equals('(') && !$token->isObjectOperator()) {
            $tokens->insertAt(
                $tokens->getPrevMeaningfulToken($index) + 1,
                [new Token('('), new Token(')')]
            );
        }
    }

    private function ensureNoParenthesesAt(Tokens $tokens, int $index): void
    {
        if (!$tokens[$index]->equals('(')) {
            return;
        }

        $closingIndex = $tokens->getNextMeaningfulToken($index);

        // constructor has arguments - parentheses can not be removed
        if (!$tokens[$closingIndex]->equals(')')) {
            return;
        }

        // Check if there's an object operator after the closing parenthesis
        // Preserve parentheses in expressions like "new A()->method()" as per RFC
        $afterClosingIndex = $tokens->getNextMeaningfulToken($closingIndex);
        if ($tokens[$afterClosingIndex]->isObjectOperator()) {
            return;
        }

        $tokens->clearTokenAndMergeSurroundingWhitespace($closingIndex);
        $tokens->clearTokenAndMergeSurroundingWhitespace($index);
    }
}
